Total # Posts: 327
Maths Year 10 Equations
A shopkeeper bought x pens for $21. a) write down an expression, in terms of x, for the cost, in cents, of each pen b) the shopkeeper gave 2 pens to his sons and sold each of the remaining pens at 8 cents more than he paid for it. Write down an expression, in terms of x, for ...
July 11, 2016
A building casts a shadow that is 250 ft long. The angle of elevation from the tip of the shadow to the top of the building is 43°. Find the height of the building to the nearest foot.
May 29, 2016
From a faucet, a constant inflow of water is to fill a conical vessel 15 feet deep and 7.5 feet in diameter at the top. water is rising at the rate of 2 feet per minute when the water is 4 feet deep. what is the rate of inflow in ft^3/min?
May 18, 2016
evng .my teacher gave me this as a homework but i dnt undertand. 1.In a GP the 3rd term is equal to four times the first term and the sixth term is equal to three times the fourth term plus 32. Determine the sequence.
May 3, 2016
A collection of nickels dimes and quarters consist of 22 coins with the total value of 1.75. If the number of nickels is three times the number of dimes, how many of each coin are contained in the collection
April 28, 2016
Susan charges twice as much money on credit card with a 7.5% annual interest rate as she does on a card with 6% interest. If her total interest after 1 year is $840, how much did she charge on each card?
April 6, 2016
Jarrett was selling tickets at local carnical. The tickets cost 2.00 for adults and 1.50 for children. How many of each kind of ticket did he sell if he sold a total of 300 tickets for $525?
April 5, 2016
I am trying to help my grandson with his math homework. When I went to school we never learned this and I am at a loss. The question is: Create an equivalent expression at includes at least one parenthesis so that the value of the expression is 144. The expression is 4+5x17-3 ...
February 23, 2016
Can you explain how to do this question? "Three clocks ring once at the same time. After that, the first clock rings after every 90 minutes, the second after every 30 minutes, and third after every 60 minutes. After how many minutes will they again ring together?
January 18, 2016
For each function, i) determine the corresponding reciprocal function, y =1/f(x) ii) state the non-permissible values of x and the equation(s) of the vertical asymptote(s) of the reciprocal function iii) determine the x-intercepts and the y-intercept of the reciprocal function...
January 1, 2016
5th grade math
The fifth-grade class at John Adams Middle School earned $428.81 at their school carnival. The money is being divided between 23 students to help pay for their class trip. How much money will each student receive? Round to the nearest hundredth. is it $18.60 ?
December 16, 2015
Math-Investment Word problem
Vic invested part of the 40,000 bonus that he received at 8%. The remainder was invested at 10%. If after 2 years, the earning from 8% investment is 1.2 times his earnings from 10% investment, how much was invested at each rate?
December 5, 2015
Write a Boolean valued Function that takes two student grades and returns True if the average is greater than or equal to 90 and False otherwise. Write a VB statement that calls the function and displays in a MessageBox whether or not the student grade is an A average.
November 2, 2015
A Bagels store charges 75 cents per bagel for orders of less than a half-dozen bagels and 60 cents per bagel for orders of a half-dozen or more. Assume that the number of bagels ordered has been stored in a variable named NumBagels. Write VB code that calculates and stores the...
November 2, 2015
6th Grade Math
My Question: When Im doing multiplication, do i check it by using 2? For example: 84 times 37 = 3,078 How do i check my answer using estimation? - Answer: Im sorry, but i really need help on this question, I'm kinda stuck
September 15, 2015
Thank You. This works,and easier I also did it by finding the ln of the expression (3x+1)[ln(3x-2)-ln(3x+4)] changed to [ln(3x-2)-ln(3x+4)]/(1/(3x+1) then used L'Hospital Rule to get lim=0 so since ln y = 0, the e^0=1
July 7, 2015
Gateway Arch in St. Louis was constructed using the equation y=211.49-20.96cosh(0.03291765x) where |x|<=91.20 a) what is the height at its center in meters b) At what points is height 70m (2 values of x) c) what is the slope of arch at points in part b
June 21, 2015
The cost T, in hundreds of dollars, of tuition and fees at many community colleges can be approximately by T=1/4c+6,where c is the number of credits for which a student registers. Graph the equation and use the graph to estimate the cost of tuition and fees when a student ...
May 13, 2015
each individual letter of the word Tallahassee is placed on a piece of paper and all 11 pieces of paper are placed in a hat. If one letter is selected at random from the hat, determine the probability that the letter T or E is selected.
May 13, 2015
Each inidividual letter of the word Tallahassee is placed on a piece of paper and all 11pieces of paper are placed in a hat, if one letter is selected at random from the hat, determine the probability that the letter T or F is selected.
May 11, 2015
As the investment analyst for King breweries you are required to analyze the automated loom system in the Castle larger production line. The old system was purchased 5 years ago for $200,000. It falls in the accelerated cost recovery 5 year class and it has 5 years of ...
March 24, 2015
Two equilateral triangles are sitting side-by-side. The length of one side of Triangle A is 5 ft. The sides of Triangle B are 3 times as long as those of Triangle A. How long is the length of one side of Triangle B?
January 29, 2015
The batting averages of the first three batters in the Eureka College womens softball team lineup are .310, .301, and .277. If the first three batters are considered as the lead-off group, what is the batting average of the group?
January 22, 2015
The number of visitors to your business website increased at a rate of 60% per day, going from 30 per day to 30,000 per day. How many days did it take to go from 30 to 30,000 visitors per day? 30,000(1+0.6) but I need to solve for t that's where I get lost.
December 21, 2014
Temperature AF 40 1000 60 1840 70 2260 85 2890 Find a linear model for the number of acre-feet of water that evaporate as function of temperature. E(T)= Is the answer E(T)=42T-960?
October 27, 2014
Find the equation of the line, in slope-intercept form, that satisfies the given conditions. The graph is perpendicular to the graph of y=3x-1 and passes through the points whose coordinates are (4,-2). Y=______
October 27, 2014
A stone is dropped at t = 0. A second stone, with 4 times the mass of the first, is dropped from the same point at t = 110 ms. (a) How far below the release point is the center of mass of the two stones at t = 410 ms? (Neither stone has yet reached the ground.) (b) How fast is...
April 1, 2014
Adam wants to compare the fractions 2/5 , 1/6 and 1/3. He wants to order them from least to greatest and rewrite them so they all have the same denominator. Explain how Adam can rewrite the fraction Oops I made a mistake on the previous question! Sorry about that....
February 10, 2014
If ST = y + 2, RT = 5y 10 and RS = 2y, then find the value of y and all three lengths. If RS = 4x, Line RS approximately equal to line ST and RT = 24, then find the value of x.
November 15, 2013
1. Sandy, a 16-year-old woman, returns to the emergency room for the fifth time. She has been treated for Bulimia repeatedly. On initial assessment, you note shallow breathing. ARTERIAL BLOOD GASES are as follows: pH = 7.45 PaCO2 =47 mmHg HCO3- = 33 mEq/Liter My answer is ...
November 11, 2013
A student on a piano stool rotates freely with an angular speed of 2.85rev/s . The student holds a 1.10kg mass in each outstretched arm, 0.789m from the axis of rotation. The combined moment of inertia of the student and the stool, ignoring the two masses, is 5.23kg⋅m2...
November 7, 2013
If the heat of combustion for a specific compound is -1080.0 kJ/mol and its molar mass is 58.29 g/mol, how many grams of this compound must you burn to release 300.60kJ of heat?
October 29, 2013
Templeton Extended Care Facilities, Inc. is considering the acquisition of a chain of cemeteries for $400 million. Since the primary asset of this business is real estate, Templeton's management has determined they will be able to borrow the majority of the money needed to...
September 23, 2013
It is between 7 and 8 million it contains all the digits greater then 1 and less then 8 the hundred thousands digit is 3 the ten thousands digit are the same their sum is the ones digit the tens digit is greater then the hundreds digit
September 13, 2013
What is the expected freezing point of a 3.50 m (m standing for molality)aqueous solution of BaCl2(Kfp= 1.86 degrees Celsius/m)? What is the expected boiling point(Kbp= 0.512 degrees Celsius/m)? which is effected to the greater extent, the boiling point or freezing point? ...
April 7, 2013
Sodium bicarbonate is often used to neutralize acids, such as the following reaction: NaHCO3 + HCl ---> NaCl + H20 + CO2. What is the normality of a sodium bicarbonate solution containing 5.08 g NaHCO3 in 150.0 mL solution? this chapter in chemistry is really confusing and ...
April 7, 2013